如何把SegmentedControl加到Navigation中间(用代码)

Question

我在网上找到的是加到左按钮和右按钮上，代码如下：
    UISegmentedControl *segmentedControl=[[UISegmentedControl alloc] initWithFrame:CGRectMake(80.0f, 8.0f, 150.0f, 30.0f) ]; 
    [segmentedControl insertSegmentWithTitle:@"One" atIndex:0 animated:YES]; 
    [segmentedControl insertSegmentWithTitle:@"Two" atIndex:1 animated:YES]; 
    [segmentedControl insertSegmentWithTitle:@"Three" atIndex:2 animated:YES]; 
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; 
    segmentedControl.momentary = YES; 
    segmentedControl.multipleTouchEnabled=NO; 
    [segmentedControl addTarget:self action:@selector(SelectSeg) forControlEvents:UIControlEventValueChanged]; 
    UIBarButtonItem *segButton = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl]; 
    self.seg=segmentedControl;
    self.seg.selectedSegmentIndex=0;
    [segmentedControl release]; 
    self.navigationItem.rightBarButtonItem = segButton; 
    [segButton release];可是现在的情况是左按钮是做为返回按钮，右按钮也有别的用处，所以要把这个SegmentControl放在navigation中间，请问要怎么写

Answer 1

1  UINavigationbar不是有一个属性是titleView，titleView是位置中间的；
2  而UISegmentedControl是基于UIView的；
3  这样的话，你懂的。。

Answer 2

你说是这样吗
segmentedControl=[[UISegmentedControl alloc] initWithFrame:CGRectMake(80.0f, 8.0f, 150.0f, 30.0f) ]; 
    [segmentedControl insertSegmentWithTitle:@"One" atIndex:0 animated:YES]; 
    [segmentedControl insertSegmentWithTitle:@"Two" atIndex:1 animated:YES]; 
    [segmentedControl insertSegmentWithTitle:@"Three" atIndex:2 animated:YES]; 
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; 
    segmentedControl.momentary = YES; 
    segmentedControl.multipleTouchEnabled=NO; 
    [segmentedControl addTarget:self action:@selector(SelectSeg) forControlEvents:UIControlEventValueChanged]; 
    //UIBarButtonItem *segButton = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl]; 
    self.seg=segmentedControl;
    self.seg.selectedSegmentIndex=0;
    [self.navigationItem.titleView addSubview:segmentedControl];
好象不行，显示不出来

Answer 3

不是addsubview，是[self.navigationItem setTitleView:segmentedControl];
你这样写。